Dashboard / CVE-2026-118166

CVE-2026-118166

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 60/100
Published: 2026-11-06 Modified: 2026-11-06 First seen: 2026-11-06 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: Low
I: Low
A: None

Description

The MC4WP: Mailchimp for WordPress WordPress plugin before 4.15.0 does not prevent request-derived values in its dynamic content tags from being processed as shortcodes when a form is embedded with its block, allowing unauthenticated visitors to execute arbitrary registered shortcodes with attacker-chosen attributes. This requires the site owner to have added a request-derived tag to the form content and to embed the form with the block rather than the classic shortcode.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
Unknown MC4WP: Mailchimp for WordPress 0 < 4.15.0
Unknown MC4WP: Mailchimp for WordPress 0 < 4.15.0

References & Advisories (1)

Bug Bounty Relevance

60 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

4.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS — Exploitation Probability

0.18%
Raw Score 0.001770
Percentile 7.4%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00177
2026-11-12
0.00177
2026-11-10
0.00177
2026-11-09
0.00177
2026-11-08
0.00177
2026-11-07
0.00177
2026-11-06
0.00177

Intelligence Sources

mitre ref →
nvd ref →

External Links